R12 VS FUSION

Component	Oracle e-Business Suite	Oracle Fusion Applications
Database	Oracle Database 10g	Oracle Database 11g
Application Server	Oracle application server 10.1.2 (Forms) Oracle Application server 10.1.3 (OC4J)	Oracle WebLogic
User Interface	Forms, JSPs	Oracle ADF + ADF Java Server Faces
Portal	Oracle Portal	Oracle Webcenter
Data Model	Oracle eBS Data Model	Oracle eBS Data Model + Siebel + PoepleSoft (Trees, Data Effectivity, person Model)
Attachments/Imaging	BLOBs	UCM/Stellant
Workflow/Approval	PL/SQL	BPEL
Reports	Reports (11i), Discoverer	BI Publisher
Analytics	Discoverer	OBIEE
Financial Reporting	Financial Statement Generator	Hyperion
Integration	AIA	AIA + BPEL + More web services
XML Gateway	XML Gateway	BPEL, B2B Adapter

Oracle Fusion Middleware Components: 

Its technology framework includes the following Oracle Fusion Middleware components -

1.Oracle WebLogic Server- Java application server that helps to deploy multiple applications in a robust and scalable environment.

2.Oracle WebLogic Communication Services- provides click-to-dial functionality through contextual Actions which further helps users with information and actions.

3.Oracle Identity Management- automatically manages user access and provides services and interfaces for third party application developments.

4.Oracle WebCenter- combines user interface technologies for building social applications.

5.Oracle Business Intelligence-offers a complete to generates and delivers analyses for fusion application.

6.Oracle SOA Suite-a comprehensive software for building and deploying service-oriented architecture.

7.Oracle Application Development Framework- a java framework to simplify application development by minimizing code writing

8.Oracle JDeveloper- for building service-oriented applications using industry standards 

Service-Oriented Architecture (SOA): 

Oracle Fusion Application are based on SOA-Services oriented Architecture.

This is a significant technology change adapted by Oracle. SOA Suite, a middleware component of Oracle Fusion Middleware, provides infrastructure component for designing, deploying and managing SOA composite applications. Various services can be created, managed and helps to put together multiple technology components into one SOA composite application.